Actually i am not biding for the work, just want to give you an idea: If you have any trustable witness or any kind of records of him calling you racist words, take it to the court. If you know his comments are fake, track the users back to source, eventually you'll see an exposable point.
After you get to the court, give your story to related media as the victim, and then see what happens.
Have a good day.
Sincerely,
Another guy hates Racists.